Try to make test_storage import on Python 3.

src/allmydata/client.py

@@ -2,7 +2,10 @@ import os, stat, time, weakref
 from base64 import urlsafe_b64encode
 from functools import partial
 from errno import ENOENT, EPERM
-from ConfigParser import NoSectionError
+try:
+    from ConfigParser import NoSectionError
+except ImportError:
+    from configparser import NoSectionError
 
 from foolscap.furl import (
     decode_furl,

src/allmydata/immutable/upload.py

@@ -1,3 +1,5 @@
+from past.builtins import long
+
 import os, time, weakref, itertools
 from zope.interface import implementer
 from twisted.python import failure
@@ -26,7 +28,7 @@ from allmydata.interfaces import IUploadable, IUploader, IUploadResults, \
 from allmydata.immutable import layout
 
 from six.moves import cStringIO as StringIO
-from happiness_upload import share_placement, calculate_happiness
+from .happiness_upload import share_placement, calculate_happiness
 
 from ..util.eliotutil import (
     log_call_deferred,

src/allmydata/node.py

@@ -7,7 +7,10 @@ import os.path
 import re
 import types
 import errno
-import ConfigParser
+try:
+    import ConfigParser
+except ImportError:
+    import configparser as ConfigParser
 import tempfile
 from io import BytesIO
 from base64 import b32decode, b32encode

src/allmydata/storage_client.py

@@ -30,9 +30,12 @@ the foolscap-based server implemented in src/allmydata/storage/*.py .
 
 
 import re, time, hashlib
-from ConfigParser import (
-    NoSectionError,
-)
+try:
+    from ConfigParser import (
+        NoSectionError,
+    )
+except ImportError:
+    from configparser import NoSectionError
 import attr
 from zope.interface import (
     Attribute,
@@ -534,11 +537,11 @@ class _NullStorage(object):
     which we can't communicate.
     """
     nickname = ""
-    permutation_seed = hashlib.sha256("").digest()
-    tubid = hashlib.sha256("").digest()
+    permutation_seed = hashlib.sha256(b"").digest()
+    tubid = hashlib.sha256(b"").digest()
     storage_server = None
 
-    lease_seed = hashlib.sha256("").digest()
+    lease_seed = hashlib.sha256(b"").digest()
 
     name = "<unsupported>"
     longname = "<storage with unsupported protocol>"

src/allmydata/test/common.py

@@ -88,6 +88,8 @@ from ..crypto import (
 from .eliotutil import (
     EliotLoggedRunTest,
 )
+# Backwards compatibility imports:
+from .common_py3 import LoggingServiceParent, ShouldFailMixin  # noqa: F401
 
 
 TEST_RSA_KEY_SIZE = 522
@@ -780,53 +782,8 @@ def create_mutable_filenode(contents, mdmf=False, all_contents=None):
     return filenode
 
 
-class LoggingServiceParent(service.MultiService):
-    def log(self, *args, **kwargs):
-        return log.msg(*args, **kwargs)
-
-
 TEST_DATA="\x02"*(Uploader.URI_LIT_SIZE_THRESHOLD+1)
 
-class ShouldFailMixin(object):
-    def shouldFail(self, expected_failure, which, substring,
-                   callable, *args, **kwargs):
-        """Assert that a function call raises some exception. This is a
-        Deferred-friendly version of TestCase.assertRaises() .
-
-        Suppose you want to verify the following function:
-
-         def broken(a, b, c):
-             if a < 0:
-                 raise TypeError('a must not be negative')
-             return defer.succeed(b+c)
-
-        You can use:
-            d = self.shouldFail(TypeError, 'test name',
-                                'a must not be negative',
-                                broken, -4, 5, c=12)
-        in your test method. The 'test name' string will be included in the
-        error message, if any, because Deferred chains frequently make it
-        difficult to tell which assertion was tripped.
-
-        The substring= argument, if not None, must appear in the 'repr'
-        of the message wrapped by this Failure, or the test will fail.
-        """
-
-        assert substring is None or isinstance(substring, str)
-        d = defer.maybeDeferred(callable, *args, **kwargs)
-        def done(res):
-            if isinstance(res, failure.Failure):
-                res.trap(expected_failure)
-                if substring:
-                    message = repr(res.value.args[0])
-                    self.failUnless(substring in message,
-                                    "%s: substring '%s' not in '%s'"
-                                    % (which, substring, message))
-            else:
-                self.fail("%s was supposed to raise %s, not get '%s'" %
-                          (which, expected_failure, res))
-        d.addBoth(done)
-        return d
 
 class WebErrorMixin(object):
     def explain_web_error(self, f):

src/allmydata/test/common_py3.py

@@ -19,11 +19,13 @@ import time
 import signal
 
 from twisted.internet import defer, reactor
+from twisted.application import service
 from twisted.python import failure
 from twisted.trial import unittest
 
 from ..util.assertutil import precondition
 from ..util.encodingutil import unicode_platform, get_filesystem_encoding
+from ..util import log
 
 
 class TimezoneMixin(object):
@@ -135,3 +137,50 @@ class FakeCanary(object):
         if self.ignore:
             return
         del self.disconnectors[marker]
+
+
+class LoggingServiceParent(service.MultiService):
+    def log(self, *args, **kwargs):
+        return log.msg(*args, **kwargs)
+
+
+class ShouldFailMixin(object):
+    def shouldFail(self, expected_failure, which, substring,
+                   callable, *args, **kwargs):
+        """Assert that a function call raises some exception. This is a
+        Deferred-friendly version of TestCase.assertRaises() .
+
+        Suppose you want to verify the following function:
+
+         def broken(a, b, c):
+             if a < 0:
+                 raise TypeError('a must not be negative')
+             return defer.succeed(b+c)
+
+        You can use:
+            d = self.shouldFail(TypeError, 'test name',
+                                'a must not be negative',
+                                broken, -4, 5, c=12)
+        in your test method. The 'test name' string will be included in the
+        error message, if any, because Deferred chains frequently make it
+        difficult to tell which assertion was tripped.
+
+        The substring= argument, if not None, must appear in the 'repr'
+        of the message wrapped by this Failure, or the test will fail.
+        """
+
+        assert substring is None or isinstance(substring, str)
+        d = defer.maybeDeferred(callable, *args, **kwargs)
+        def done(res):
+            if isinstance(res, failure.Failure):
+                res.trap(expected_failure)
+                if substring:
+                    message = repr(res.value.args[0])
+                    self.failUnless(substring in message,
+                                    "%s: substring '%s' not in '%s'"
+                                    % (which, substring, message))
+            else:
+                self.fail("%s was supposed to raise %s, not get '%s'" %
+                          (which, expected_failure, res))
+        d.addBoth(done)
+        return d

src/allmydata/test/test_storage.py

@@ -30,12 +30,11 @@ from allmydata.mutable.layout import MDMFSlotWriteProxy, MDMFSlotReadProxy, \
                                      VERIFICATION_KEY_SIZE, \
                                      SHARE_HASH_CHAIN_SIZE
 from allmydata.interfaces import BadWriteEnablerError
-from allmydata.test.common import LoggingServiceParent, ShouldFailMixin
 from allmydata.test.no_network import NoNetworkServer
 from allmydata.storage_client import (
     _StorageServer,
 )
-from .common_py3 import FakeCanary
+from .common_py3 import FakeCanary, LoggingServiceParent, ShouldFailMixin
 
 
 class FakeStatsProvider(object):